Don't now if "topology" is the right term here. I was wondering if there is any noticeable difference in how it sounds using a voltage regulator vs a current regulator. Or: why would one use all those extra parts for replacing a 10k/2k (elysium) resistor if a TL738 could be used ?
CCS topologies
#1 CCS topologies
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#2 Re: CCS topologies
RH Amplifiers by Alex Kitic use LM317s with excellent sonic results. I have built 4 of his amps, based on the 307A and EL84. Alex says that this removes the need for matching/biasing tubes. http://rh-amps.blogspot.com/2013/05/rh- ... ersal.html
I would also ask why so many more parts.
I would also ask why so many more parts.
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#3 Re: CCS topologies
Not in the two examples above as they’re both reasonable current. But you can’t use a constant current sink on low transconductance valves.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
#4 Re: CCS topologies
Ok, but my question was going in the direction of what difference it makes using a current regulator vs a voltage regulator. And JBroskie uses both together which makes it even more difficult to understand in case it is about different levels of distortion.But you can’t use a constant current sink on low transconductance valves.
Like in pmillett's test but with the 10M45S as CCsource vs a resistor.
http://www.pmillett.com/current_source.htm